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GNU C Library master sources branch hjl/pr19463 created. glibc-2.22-674-g3d27f14


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The branch, hjl/pr19463 has been created
        at  3d27f14d247b988f3a226dce0112f7e0a69f5c30 (commit)

- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=3d27f14d247b988f3a226dce0112f7e0a69f5c30

commit 3d27f14d247b988f3a226dce0112f7e0a69f5c30
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 13 15:03:46 2016 -0800

    Avoid strdup/strndup/strsep

diff --git a/include/string.h b/include/string.h
index e145bfd..151e420 100644
--- a/include/string.h
+++ b/include/string.h
@@ -71,6 +71,12 @@ extern __typeof (strncasecmp_l) __strncasecmp_l;
       __new[__len] = '\0';						      \
       (char *) memcpy (__new, __old, __len);				      \
     }))
+
+# ifdef __OPTIMIZE_SIZE__
+#  define strdup(s)		__strdup ((s))
+#  define strndup(s, n)		__strndup ((s), (n))
+#  define strsep(s, d)		__strsep ((s), (d))
+# endif
 #endif
 
 libc_hidden_proto (__mempcpy)
@@ -99,6 +105,7 @@ libc_hidden_proto (memmem)
 extern __typeof (memmem) __memmem;
 libc_hidden_proto (__memmem)
 libc_hidden_proto (__ffs)
+libc_hidden_proto (__strsep)
 
 libc_hidden_builtin_proto (memchr)
 libc_hidden_builtin_proto (memcpy)
diff --git a/string/strsep.c b/string/strsep.c
index 1054774..1d98885 100644
--- a/string/strsep.c
+++ b/string/strsep.c
@@ -66,4 +66,5 @@ __strsep (char **stringp, const char *delim)
 }
 weak_alias (__strsep, strsep)
 strong_alias (__strsep, __strsep_g)
+libc_hidden_def (__strsep)
 libc_hidden_def (__strsep_g)

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f57d833a807aa443a89e54c518a64df1cdecbe77

commit f57d833a807aa443a89e54c518a64df1cdecbe77
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 13 14:10:34 2016 -0800

    Allow inline in sys/sysmacros.h when building glibc

diff --git a/sysdeps/unix/sysv/linux/sys/sysmacros.h b/sysdeps/unix/sysv/linux/sys/sysmacros.h
index 4c4a697..f9e2696 100644
--- a/sysdeps/unix/sysv/linux/sys/sysmacros.h
+++ b/sysdeps/unix/sysv/linux/sys/sysmacros.h
@@ -34,7 +34,7 @@ extern unsigned long long int gnu_dev_makedev (unsigned int __major,
 					       unsigned int __minor)
      __THROW __attribute_const__;
 
-#ifdef __USE_EXTERN_INLINES
+#if defined __USE_EXTERN_INLINES || defined _LIBC
 __extension__ __extern_inline __attribute_const__ unsigned int
 __NTH (gnu_dev_major (unsigned long long int __dev))
 {

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ff10fdd4ef0df890c7fc55d2b3ee485adf3424fa

commit ff10fdd4ef0df890c7fc55d2b3ee485adf3424fa
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 13 13:31:34 2016 -0800

    Include <bits/stdio.h> when building glibc

diff --git a/libio/bits/stdio.h b/libio/bits/stdio.h
index df57e7c..0c60296 100644
--- a/libio/bits/stdio.h
+++ b/libio/bits/stdio.h
@@ -27,7 +27,7 @@
 #endif
 
 
-#ifdef __USE_EXTERN_INLINES
+#if defined __USE_EXTERN_INLINES || defined _LIBC
 /* For -D_FORTIFY_SOURCE{,=2} bits/stdio2.h will define a different
    inline.  */
 # if !(__USE_FORTIFY_LEVEL > 0 && defined __fortify_function)
@@ -138,7 +138,8 @@ __NTH (ferror_unlocked (FILE *__stream))
 #endif /* Use extern inlines.  */
 
 
-#if defined __USE_MISC && defined __GNUC__ && defined __OPTIMIZE__ \
+#if defined __USE_MISC && defined __GNUC__ \
+    && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \
     && !defined __cplusplus
 /* Perform some simple optimizations.  */
 # define fread_unlocked(ptr, size, n, stream) \
diff --git a/libio/stdio.h b/libio/stdio.h
index d8d7fa0..44738a4 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -929,7 +929,7 @@ extern void funlockfile (FILE *__stream) __THROW;
 
 /* If we are compiling with optimizing read this file.  It contains
    several optimizing inline functions and macros.  */
-#ifdef __USE_EXTERN_INLINES
+#if defined __USE_EXTERN_INLINES || defined _LIBC
 # include <bits/stdio.h>
 #endif
 #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=82a543ffd097f4f5e60e898086f0bda2a647e37f

commit 82a543ffd097f4f5e60e898086f0bda2a647e37f
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Jan 14 10:16:35 2016 -0800

    Compile x86 syscalls with -fomit-frame-pointer

diff --git a/sysdeps/unix/sysv/linux/i386/Makefile b/sysdeps/unix/sysv/linux/i386/Makefile
index 71ba61e..7014829 100644
--- a/sysdeps/unix/sysv/linux/i386/Makefile
+++ b/sysdeps/unix/sysv/linux/i386/Makefile
@@ -10,6 +10,10 @@ CFLAGS-mmap.o += -fomit-frame-pointer
 CFLAGS-mmap.os += -fomit-frame-pointer
 CFLAGS-mmap64.o += -fomit-frame-pointer
 CFLAGS-mmap64.os += -fomit-frame-pointer
+CFLAGS-pselect.o += -fomit-frame-pointer
+CFLAGS-pselect.os += -fomit-frame-pointer
+CFLAGS-rtld-mmap.o += -fomit-frame-pointer
+CFLAGS-rtld-mmap.os += -fomit-frame-pointer
 endif
 
 ifeq ($(subdir),sysvipc)
@@ -26,11 +30,31 @@ endif
 # fallocate, posix_fallocate use six-argument inline syscalls.
 ifeq ($(subdir),io)
 sysdep_routines += libc-do-syscall
+# %ebp may be used to pass the 6th argument to syscall.
+CFLAGS-fallocate.o += -fomit-frame-pointer
+CFLAGS-fallocate.os += -fomit-frame-pointer
+CFLAGS-fallocate64.o += -fomit-frame-pointer
+CFLAGS-fallocate64.os += -fomit-frame-pointer
+CFLAGS-posix_fallocate.o += -fomit-frame-pointer
+CFLAGS-posix_fallocate.os += -fomit-frame-pointer
+CFLAGS-posix_fallocate64.o += -fomit-frame-pointer
+CFLAGS-posix_fallocate64.os += -fomit-frame-pointer
+CFLAGS-sync_file_range.o += -fomit-frame-pointer
+CFLAGS-sync_file_range.os += -fomit-frame-pointer
 endif
 
 # libpthread uses six-argument inline syscalls.
 ifeq ($(subdir),nptl)
 libpthread-sysdep_routines += libc-do-syscall
+# %ebp may be used to pass the 6th argument to syscall.
+CFLAGS-pthread_rwlock_timedrdlock.o += -fomit-frame-pointer
+CFLAGS-pthread_rwlock_timedrdlock.os += -fomit-frame-pointer
+CFLAGS-pthread_rwlock_timedwrlock.o += -fomit-frame-pointer
+CFLAGS-pthread_rwlock_timedwrlock.os += -fomit-frame-pointer
+CFLAGS-sem_timedwait.o += -fomit-frame-pointer
+CFLAGS-sem_timedwait.os += -fomit-frame-pointer
+CFLAGS-sem_wait.o += -fomit-frame-pointer
+CFLAGS-sem_wait.os += -fomit-frame-pointer
 endif
 
 ifeq ($(subdir),resource)

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=0d32fcb814a7ea7e857a967e96e5c76205bd729b

commit 0d32fcb814a7ea7e857a967e96e5c76205bd729b
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Jan 15 08:11:23 2016 -0800

    Add _STRING_INLINE_unaligned and string_private.h
    
    As discussed in
    
    https://sourceware.org/ml/libc-alpha/2015-10/msg00403.html
    
    the setting of _STRING_ARCH_unaligned currently controls the external
    GLIBC ABI as well as selecting the use of unaligned accesses withing
    GLIBC.
    
    Since _STRING_ARCH_unaligned was recently changed for AArch64, this
    would potentially break the ABI in GLIBC 2.23, so split the uses and add
    _STRING_INLINE_unaligned to select the string ABI. This setting must be
    fixed for each target, while _STRING_ARCH_unaligned may be changed from
    release to release.  _STRING_ARCH_unaligned is used unconditionally in
    glibc.  But <bits/string.h>, which defines _STRING_ARCH_unaligned, isn't
    included with -Os.  Since _STRING_ARCH_unaligned is internal to glibc and
    may change between glibc releases, it should be made private to glibc.
    _STRING_ARCH_unaligned should defined in the new string_private.h heade
    file which is included unconditionally from internal <string.h> for glibc
    build.
    
    2016-01-15  H.J. Lu  <hongjiu.lu@intel.com>
    	    Wilco Dijkstra  <wdijkstr@arm.com>
    
    	[BZ #19462]
    	* bits/string.h (_STRING_ARCH_unaligned): Renamed to ...
    	(_STRING_INLINE_unaligned): This.
    	* include/string.h: Include <string_private.h>.
    	* string/bits/string2.h: Replace _STRING_ARCH_unaligned with
    	_STRING_INLINE_unaligned.
    	* sysdeps/aarch64/bits/string.h (_STRING_ARCH_unaligned): Removed.
    	(_STRING_INLINE_unaligned): New.
    	* sysdeps/aarch64/string_private.h: New file.
    	* sysdeps/generic/string_private.h: Likewise.
    	* sysdeps/m68k/m680x0/m68020/string_private.h: Likewise.
    	* sysdeps/s390/string_private.h: Likewise.
    	* sysdeps/x86/string_private.h: Likewise.
    	* sysdeps/m68k/m680x0/m68020/bits/string.h
    	(_STRING_ARCH_unaligned): Renamed to ...
    	(_STRING_INLINE_unaligned): This.
    	* sysdeps/s390/bits/string.h (_STRING_ARCH_unaligned): Renamed
    	to ...
    	(_STRING_INLINE_unaligned): This.
    	* sysdeps/sparc/bits/string.h (_STRING_ARCH_unaligned): Renamed
    	to ...
    	(_STRING_INLINE_unaligned): This.
    	* sysdeps/x86/bits/string.h (_STRING_ARCH_unaligned): Renamed
    	to ...
    	(_STRING_INLINE_unaligned): This.

diff --git a/bits/string.h b/bits/string.h
index b88a6bc..89c627c 100644
--- a/bits/string.h
+++ b/bits/string.h
@@ -8,7 +8,11 @@
 #ifndef _BITS_STRING_H
 #define _BITS_STRING_H	1
 
-/* Define if architecture can access unaligned multi-byte variables.  */
-#define _STRING_ARCH_unaligned   0
+/* Define whether to use the unaligned string inline ABI.
+   The string inline functions are an external ABI, thus cannot be changed
+   after the first release of a new target (unlike _STRING_ARCH_unaligned
+   which may be changed from release to release).  Targets must support
+   unaligned accesses in hardware if either define is set to true.  */
+#define _STRING_INLINE_unaligned   0
 
 #endif /* bits/string.h */
diff --git a/include/string.h b/include/string.h
index a684fd9..e145bfd 100644
--- a/include/string.h
+++ b/include/string.h
@@ -46,6 +46,9 @@ extern int __ffs (int __i) __attribute__ ((const));
 extern char *__strerror_r (int __errnum, char *__buf, size_t __buflen);
 #endif
 
+/* Get _STRING_ARCH_unaligned.  */
+#include <string_private.h>
+
 /* Now the real definitions.  We do this here since some of the functions
    above are defined as macros in the headers.  */
 #include <string/string.h>
diff --git a/string/bits/string2.h b/string/bits/string2.h
index b93be06..8200ef1 100644
--- a/string/bits/string2.h
+++ b/string/bits/string2.h
@@ -46,7 +46,7 @@
 # endif
 #endif
 
-#if _STRING_ARCH_unaligned
+#if _STRING_INLINE_unaligned
 /* If we can do unaligned memory accesses we must know the endianess.  */
 # include <endian.h>
 # include <bits/types.h>
@@ -95,7 +95,7 @@ __STRING2_COPY_TYPE (8);
 /* Set N bytes of S to C.  */
 #if !defined _HAVE_STRING_ARCH_memset
 # if !__GNUC_PREREQ (3, 0)
-#  if _STRING_ARCH_unaligned
+#  if _STRING_INLINE_unaligned
 #   define memset(s, c, n) \
   (__extension__ (__builtin_constant_p (n) && (n) <= 16			      \
 		  ? ((n) == 1						      \
@@ -223,7 +223,7 @@ __STRING2_COPY_TYPE (8);
 #  endif
 
 #  if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
-#   if _STRING_ARCH_unaligned
+#   if _STRING_INLINE_unaligned
 #    ifndef _FORCE_INLINES
 #     define __mempcpy_args(src) \
      ((const char *) (src))[0], ((const char *) (src))[2],		      \
@@ -419,7 +419,7 @@ extern void *__rawmemchr (const void *__s, int __c);
 		  : strcpy (dest, src)))
 # endif
 
-# if _STRING_ARCH_unaligned
+# if _STRING_INLINE_unaligned
 #  ifndef _FORCE_INLINES
 #   define __strcpy_args(src) \
      __extension__ __STRING2_SMALL_GET16 (src, 0),			      \
@@ -598,7 +598,7 @@ __strcpy_small (char *__dest,
 #  endif
 
 #  if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
-#   if _STRING_ARCH_unaligned
+#   if _STRING_INLINE_unaligned
 #    ifndef _FORCE_INLINES
 #     define __stpcpy_args(src) \
      __extension__ __STRING2_SMALL_GET16 (src, 0),			      \
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/aarch64/bits/string.h
index 3c2a50b..0a508f7 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/aarch64/bits/string.h
@@ -20,5 +20,5 @@
 # error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* AArch64 implementations support efficient unaligned access.  */
-#define _STRING_ARCH_unaligned 1
+/* AArch64 uses the aligned string inline ABI.  */
+#define _STRING_INLINE_unaligned 0
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/aarch64/string_private.h
similarity index 79%
copy from sysdeps/aarch64/bits/string.h
copy to sysdeps/aarch64/string_private.h
index 3c2a50b..8b194a4 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/aarch64/string_private.h
@@ -1,5 +1,5 @@
-/* Optimized, inlined string functions.  AArch64 version.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+/* Define _STRING_ARCH_unaligned.  AArch64 version.
+   Copyright (C) 2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,5 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
 /* AArch64 implementations support efficient unaligned access.  */
 #define _STRING_ARCH_unaligned 1
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/generic/string_private.h
similarity index 69%
copy from sysdeps/aarch64/bits/string.h
copy to sysdeps/generic/string_private.h
index 3c2a50b..c880aae 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/generic/string_private.h
@@ -1,5 +1,5 @@
-/* Optimized, inlined string functions.  AArch64 version.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+/* Define _STRING_ARCH_unaligned.  Generic version.
+   Copyright (C) 2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,6 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
-/* AArch64 implementations support efficient unaligned access.  */
-#define _STRING_ARCH_unaligned 1
+/* Define to 1 if architecture can access unaligned multi-byte
+   variables.  */
+#define _STRING_ARCH_unaligned   0
diff --git a/sysdeps/m68k/m680x0/m68020/bits/string.h b/sysdeps/m68k/m680x0/m68020/bits/string.h
index 88505bb..78c9594 100644
--- a/sysdeps/m68k/m680x0/m68020/bits/string.h
+++ b/sysdeps/m68k/m680x0/m68020/bits/string.h
@@ -20,6 +20,5 @@
 # error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* Currently the only purpose of this file is to tell the generic inline
-   macros that unaligned memory access is possible.  */
-#define _STRING_ARCH_unaligned	1
+/* Use the unaligned string inline ABI.  */
+#define _STRING_INLINE_unaligned 1
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/m68k/m680x0/m68020/string_private.h
similarity index 69%
copy from sysdeps/aarch64/bits/string.h
copy to sysdeps/m68k/m680x0/m68020/string_private.h
index 3c2a50b..6846663 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/m68k/m680x0/m68020/string_private.h
@@ -1,5 +1,5 @@
-/* Optimized, inlined string functions.  AArch64 version.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+/* Define _STRING_ARCH_unaligned.  m680x0 version, x >= 2.
+   Copyright (C) 2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,6 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
-/* AArch64 implementations support efficient unaligned access.  */
-#define _STRING_ARCH_unaligned 1
+/* Tell the generic inline macros that unaligned memory access is
+   possible.  */
+#define _STRING_ARCH_unaligned   1
diff --git a/sysdeps/s390/bits/string.h b/sysdeps/s390/bits/string.h
index 09201d9..39e0b7f 100644
--- a/sysdeps/s390/bits/string.h
+++ b/sysdeps/s390/bits/string.h
@@ -21,8 +21,8 @@
 # error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* The s390 processors can access unaligned multi-byte variables.  */
-#define _STRING_ARCH_unaligned	1
+/* Use the unaligned string inline ABI.  */
+#define _STRING_INLINE_unaligned 1
 
 /* We only provide optimizations if the user selects them and if
    GNU CC is used.  */
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/s390/string_private.h
similarity index 69%
copy from sysdeps/aarch64/bits/string.h
copy to sysdeps/s390/string_private.h
index 3c2a50b..9e11eee 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/s390/string_private.h
@@ -1,5 +1,5 @@
-/* Optimized, inlined string functions.  AArch64 version.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+/* Define _STRING_ARCH_unaligned.  S/390 version.
+   Copyright (C) 2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,5 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
-/* AArch64 implementations support efficient unaligned access.  */
-#define _STRING_ARCH_unaligned 1
+/* The s390 processors can access unaligned multi-byte variables.  */
+#define _STRING_ARCH_unaligned   1
diff --git a/sysdeps/sparc/bits/string.h b/sysdeps/sparc/bits/string.h
index 3054f62..10beca6 100644
--- a/sysdeps/sparc/bits/string.h
+++ b/sysdeps/sparc/bits/string.h
@@ -20,8 +20,8 @@
 # error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* Define if architecture can access unaligned multi-byte variables.  */
-#define _STRING_ARCH_unaligned   0
+/* sparc uses the aligned string inline ABI.  */
+#define _STRING_INLINE_unaligned 0
 
 /* sparc32 and sparc64 strchr(x, '\0') perform better than
    __rawmemchr(x, '\0').  */
diff --git a/sysdeps/x86/bits/string.h b/sysdeps/x86/bits/string.h
index 1a0682b..e4e019f 100644
--- a/sysdeps/x86/bits/string.h
+++ b/sysdeps/x86/bits/string.h
@@ -20,8 +20,8 @@
 # error "Never use <bits/string.h> directly; include <string.h> instead."
 #endif
 
-/* The ix86 processors can access unaligned multi-byte variables.  */
-#define _STRING_ARCH_unaligned	1
+/* Use the unaligned string inline ABI.  */
+#define _STRING_INLINE_unaligned 1
 
 /* Enable inline functions only for i486 or better when compiling for
    ia32.  */
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/x86/string_private.h
similarity index 69%
copy from sysdeps/aarch64/bits/string.h
copy to sysdeps/x86/string_private.h
index 3c2a50b..e7281eb 100644
--- a/sysdeps/aarch64/bits/string.h
+++ b/sysdeps/x86/string_private.h
@@ -1,5 +1,5 @@
-/* Optimized, inlined string functions.  AArch64 version.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+/* Define _STRING_ARCH_unaligned.  i486/x86-64 version.
+   Copyright (C) 2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,5 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
-/* AArch64 implementations support efficient unaligned access.  */
-#define _STRING_ARCH_unaligned 1
+/* The ix86 processors can access unaligned multi-byte variables.  */
+#define _STRING_ARCH_unaligned   1

-----------------------------------------------------------------------


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